立体平板热管强化温差发电性能的实验研究

Experimental Study on Three-dimensional Flat Plate Heat Pipe Enhancing the Thermoelectric Generation Performance

为提升温差发电装置的发电效率,提出了一种立体平板热管强化性能方法,通过实验对比评估了2种充液率对该立体平板热管均热性能的影响,探究了不同温差下温差发电系统的最大输出功率和发电效率。结果表明:充液率为27.4%时立体平板热管启动过程为分段启动,且温度分层现象明显;充液率为31.7%时立体平板热管可在40℃左右时迅速启动,启动后温度分布均匀性和一致性较好,有利于温差发电系统持续稳定高效发电;基于立体平板热管强化的温差发电系统的最大输出功率和发电效率均随着冷热端温差的增大而增大,且温差发电效率最高可达3.99%。

To improve the power generation efficiency of the thermoelectric power generation device,a method for enhancing the performance of three-dimensional flat plate heat pipes was proposed.The effects of the two liquid filling rates on the thermal performance of the three-dimensional flat heat pipe were compared and evaluated by experiments,and the maximum output power and power generation efficiency of the thermoelectric power generation system under different temperature differences were explored.Results show that when the liquid filling rate is 27.4%,the three-dimensional flat heat pipe start-up process is staged start-up and the temperature stratification is significant.When the liquid filling rate is 31.7%,the three-dimensional flat heat pipe can be quickly activated at around 40℃,and the temperature distribution uniformity and consistency are good after start-up,which is conducive to the sustained,stable and efficient power generation of the thermoelectric power generation system.The maximum output power and power generation efficiency of the thermoelectric power generation system strengthened by three-dimensional flat plate heat pipes increase with the increase of the temperature difference,and the thermoelectric power generation efficiency can reach up to 3.99%.